Point Forecast Matrices
Issued by NWS Billings, MT

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Point Forecast Matrices
National Weather Service Billings MT
1009 AM MDT Mon Sep 21 2026

MTZ235-212200-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
1009 AM MDT Mon Sep 21 2026

Date             Mon 09/21/26            Tue 09/22/26            Wed 09/23/26
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      70          48          77          53          79
Temp                   61 69 68 60 54 51 49 53 68 76 75 65 60 57 54 58 72 79 77
Dewpt                  53 51 52 51 49 49 47 47 49 46 50 48 48 47 46 49 51 47 49
RH                     75 53 57 72 83 93 93 80 51 34 41 54 64 69 74 72 48 32 37
Wind dir                S  E  E  E NE  N SW SW  S  E  E  E  W SW  W SW  W  W  E
Wind spd                4  6 10  5  5  4  3  4  4  5  5  4  4  6  9  9 10  5  4
Clouds                 B2 FW FW FW FW FW B1 SC SC FW B2 B2 B2 B2 B2 SC FW FW FW
PoP 12hr                      0           0           0          40          10
QPF 12hr                      0           0           0        0.03           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                  C  C
Obvis                              PF PF


Date               Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            52    81      53    83      53    71      46    68
Temp          60   53 74 79 62   55 76 79 62   54 65 68 55   47 61 66
Dewpt         46   43 49 49 44   43 48 50 45   42 43 43 41   40 43 45
PWind dir           S     S      SE    SW       W     E      NE     E
Wind char          LT    LT      LT    LT      GN    GN      GN    LT
Avg clouds    FW   FW FW CL CL   FW FW FW SC   SC SC SC SC   B1 B1 SC
PoP 12hr            0     0       0     0      20    10      10    20
Rain shwrs                                 S                        S

$$
MTZ065-212200-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
1009 AM MDT Mon Sep 21 2026

Date             Mon 09/21/26            Tue 09/22/26            Wed 09/23/26
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      73          42          77          46          78
Temp                   66 73 71 59 53 49 45 52 70 76 73 62 58 51 47 54 71 78 75
Dewpt                  45 40 44 46 46 45 42 41 41 38 40 39 41 40 40 42 45 41 40
RH                     47 30 38 62 77 86 89 66 35 25 30 43 53 66 76 64 39 27 28
Wind dir               SW  E  E  E SE NW  W  W  W  W  W SW SW  W  W  W  W  W  W
Wind spd                5  9 11 10  4  3  5  5  4  4  4  5  5  8  8  9  6  8  5
Clouds                 B1 FW CL FW FW FW SC SC B1 B2 B2 B2 B2 B1 SC FW CL FW FW
PoP 12hr                      0           0           0          20           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                               S  S  S
Obvis                              PF PF


Date               Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            46    81      48    81      45    69      39    68
Temp          58   47 73 77 60   53 75 76 58   47 63 65 51   40 61 65
Dewpt         40   37 41 41 40   38 40 40 41   40 40 38 39   38 39 39
PWind dir          SW    SW       S    SW       W     W       E    SW
Wind char          LT    LT      GN    GN      GN    GN      GN    LT
Avg clouds    FW   FW FW FW FW   FW FW FW SC   SC SC SC SC   SC SC SC
PoP 12hr            0     0       0     5      20    10      20    20
Rain shwrs                                 S             S    S  S  S

$$
MTZ032-212200-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
1009 AM MDT Mon Sep 21 2026

Date             Mon 09/21/26            Tue 09/22/26            Wed 09/23/26
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      68          47          76          51          78
Temp                   63 66 66 58 54 52 50 55 68 75 74 64 58 54 52 56 68 75 77
Dewpt                  53 52 54 54 52 52 50 52 55 53 55 55 54 53 52 54 55 52 56
RH                     70 61 65 86 93100100 90 63 46 51 73 86 96100 93 63 45 48
Wind dir               SE SE SE SE SE SE SE SE SE SE SE SE SE  E  E SE  S  W NW
Wind spd               10 10 11 13 12 10 10 12 11 10 10 13  9  5  4  2  4  4  2
Wind gust                       24
Clouds                 B2 B2 SC FW FW FW SC SC FW FW FW SC SC B1 B2 B1 SC FW FW
PoP 12hr                      5           0           0          40          50
QPF 12hr                      0           0           0        0.04        0.03
Snow 12hr                 00-00       00-00       00-00
Drizzle
Rain shwrs                                                  C  C  C  C
Tstms                                                          S  S


Date               Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            50    84      55    84      53    73      47    71
Temp          59   51 76 80 64   57 77 80 63   55 68 69 55   48 64 68
Dewpt         52   48 51 48 50   51 53 53 51   46 43 41 41   41 42 44
PWind dir          SE    SE      SE    SE      NE    NW      NE     E
Wind char          LT    LT      GN    GN      GN    GN      GN    GN
Avg clouds    FW   FW FW CL FW   SC SC FW FW   SC SC FW FW   SC SC SC
PoP 12hr            0     0       0     0       5     5      10    10

$$
MTZ033-212200-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
1009 AM MDT Mon Sep 21 2026

Date             Mon 09/21/26            Tue 09/22/26            Wed 09/23/26
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      64          43          71          48          78
Temp                   61 63 60 51 49 48 47 52 65 70 66 56 54 53 50 58 72 77 72
Dewpt                  53 51 50 48 49 48 47 49 53 53 53 52 53 53 50 54 58 57 55
RH                     75 65 69 89100100100 89 65 55 63 86 96100100 86 61 50 55
Wind dir               SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE  S  W NW
Wind spd               13 14 16 16 16 16 17 19 21 21 20 20 16 13 10 10  8  8  6
Wind gust                          26 27    31 33 34 33
Clouds                 B1 B2 SC SC SC B2 B2 B1 SC B1 OV B1 B1 B2 B2 B2 B1 B1 FW
PoP 12hr                      5           0           0          40          70
QPF 12hr                      0           0           0        0.01        0.10
Snow 12hr                 00-00       00-00       00-00
Drizzle
Rain shwrs                                                  C  C  L  L  C  C
Tstms                                                          S  S  S  S  S


Date               Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            48    83      51    83      51    76      44    71
Temp          56   49 78 77 59   54 76 76 61   54 70 69 53   46 65 65
Dewpt         52   46 50 47 52   53 55 52 53   48 44 40 41   41 40 41
PWind dir           S    SE      SE    SE      SE    NW      NE    SE
Wind char          LT    LT      GN    BZ      BZ    GN      GN    GN
Avg clouds    FW   FW FW FW FW   SC SC FW FW   SC SC FW FW   SC SC SC
PoP 12hr            5     0       0     5       5     5      20    20
Rain shwrs                                                    S     S

$$
WYZ199-212200-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
1009 AM MDT Mon Sep 21 2026

Date             Mon 09/21/26            Tue 09/22/26            Wed 09/23/26
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      67          40          76          47          76
Temp                   65 67 64 54 48 42 41 50 70 76 74 59 55 50 48 56 73 76 73
Dewpt                  52 48 50 48 46 42 41 42 45 44 46 46 45 43 44 46 47 45 46
RH                     63 50 60 80 93100100 74 41 32 37 62 69 77 86 69 40 33 38
Wind dir                E  E  E SE SE SW  N  E  E  E  E  S SW SW  W  W  N  N  N
Wind spd                5  6  6  5  4  3  0  1  2  3  2  3  2  2  2  2  4  4  2
Clouds                 SC SC SC FW FW FW SC SC FW FW SC SC B1 B1 B1 SC SC SC FW
PoP 12hr                      5           0           0          40          30
QPF 12hr                      0           0           0        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                               S  C  C  C  C  S  S
Tstms                                                    S
Obvis                              PF PF PF


Date               Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            44    81      48    83      48    75      42    72
Temp          52   45 77 78 57   49 79 79 57   49 72 71 51   42 66 68
Dewpt         45   39 44 43 42   40 42 43 41   41 42 41 41   41 43 43
PWind dir          SW    SE       S    SW       W    NE      NW     S
Wind char          LT    LT      GN    LT      LT    LT      LT    LT
Avg clouds    FW   FW FW FW FW   SC SC FW FW   FW SC FW SC   SC SC SC
PoP 12hr            0     0       0     0       5    10      10    20
Rain shwrs                                                       S  S

$$